To add to the last post, I've also being looking at the relay harness you can buy now.
Basically, Red and Black wire for your battery terminals, two runs of cable to go to your HID ballast and then one plug for a H7 socket, I'd need to cut the end off as I don't have a H7 socket and wire directly, my question is, if the car still doesn't see there being a bulb there, isn't it just gonna cut the power telling the relay to be open which will then switch the relay to a closed position? Or am I being naive as to how relays work?